Cooktop or portion thereof



FIG. 1 is a top perspective view of a cooktop or portion thereof showing the new design.

FIG. 2 is a top view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a side view thereof.

FIG. 5 is another side view thereof.

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of a cooktop and form no part of the claimed design. 

CLAIM The ornamental design for a cooktop or portion thereof, as shown and described. 